NU1talk#335

Searches for Diffuse and Galactic neutrino emissions with ANTARES telescope

ANTARES – 15 years of multi-messenger astronomy in the sea

  • Théophile CartraudAPC
  • Javier Marañón GonzálezAPC
  • Jose Navarro-Salas

The ANTARES neutrino telescope has collected data from February 2007 until its shutdown in February 2022. The full ANTARES dataset, including both track-like and shower-like events, has been used to search for both a diffuse, and a galactic neutrino flux. The latter being either evaluated agnostically through the contribution of the Galactic ridge with a single power law, or by evaluating different models of galactic emission. This talk will review the results of these analyses, which revolve around two kinds of methods. First, a Bayesian counting approach for both the diffuse and galactic ridge analysis is presented. Second, a frequentist likelihood analysis is applied for phenomenological models such as KRA-γ, CRINGE or Fermi-LAT 0, but also toy-models modelling the Galactic Ridge analysis Strong electromagnetic and gravitational field physics: From laboratories to early Universe / 336 Adiabatic regularization for massive and massless spin-1 fields Universidad de Valencia / IFIC 2 University of Valencia-IFIC (CSIC) The adiabatic regularization method is likely the most direct and intuitive subtraction scheme for FLRW cosmologies. The method requires one to start with a nonvanishing mass, but massless theories can be studied by taking the massless limit at the end of the calculations. In fact, the conformal anomaly for scalar fields was first derived with the adiabatic method by taking the massless limit. For spin-1, however, this limit changes the number of degrees of freedom, so it cannot be performed directly. In this work, we show a direct approach that begins with the canonical quantization of a massive Proca field in FLRW. We give the details of the construction and show that, in the massless limit, the renormalized stress-energy tensor of the Proca field is closely related to that of a minimally coupled scalar field. Bibliography: [DOI 10.1103/PhysRevD.108.125001]

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